[slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
Oops, yes, I should have written 208v vs. 240. Thanks for the correction. -- MrC ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
Re: [slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
On Sun, 2005-09-25 at 09:19 -0700, MrC wrote: > PAUL WILLIAMSON Wrote: > > As for power supply standards, try figuring out why hospitals > > (and a select few other businesses) get 207V. I have > > absolutely no idea why, but they do. > > Most larger businesses run higher 240 voltages, because they use > 3-phase power. 3-phase is far more efficient for large amperage > circuts than the standard 2-phase we all normally use. Also, 3-phase > is a no-brainer for generator motors, due to the 3 poles on such > motors. I'm no longer working with electrical engineers all the time, but I think MrC has the concept right, but the numbers wrong. Or I could be wrong. I think 240v is standard one phase, two leg power, which most of the US has in their house. Common 120v is one leg, to ground. Dryers and air conditioners use both legs and see 240v. 208v is three phase. And it is way more efficient for motors, etc. Some industrial/commercial lighting is 177v because that is what you get when you tie two of the three phase legs together. Hospitals also use lots of 120v circuits with special and expensive outlets. The key is that they are designed to avoid sparks, which is important since oxygen is everywhere in most hospitals and other explosive gasses (used for anesthesia, etc.) are also common. Audiophiles buy the hospital grade outlets to improve the sound of their systems. Some audiophile vendors take normal $30 hospital outlets and put them in nice boxes and sell them for $100. Nice mark up. -- Pat http://www.pfarrell.com/music/slimserver/slimsoftware.html ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
PAUL WILLIAMSON Wrote: > As for power supply standards, try figuring out why hospitals > (and a select few other businesses) get 207V. I have > absolutely no idea why, but they do. Most larger businesses run higher 240 voltages, because they use 3-phase power. 3-phase is far more efficient for large amperage circuts than the standard 2-phase we all normally use. Also, 3-phase is a no-brainer for generator motors, due to the 3 poles on such motors. Google-up to learn more about 3 phase power. -- MrC ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
I never knew this before, but it seems to be true that at least some hospitals run on 207V. I found mention of it in several articles after searching in Google. Hospitals have special designated outlets in each room, coloured differently, that survive power failures. About the only clue I could find is that 207V is 10% down (acceptable lower limit for voltage drift) from 230V. Maybe something about the emergency power supplies? -- Michaelwagner ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
Taken from http://www.solwise.co.uk/net-powerline.htm These were the results: PL14 - 14Meg Homeplug adapter: 7.5Mb/s PL85 - 85Meg Homeplug Turbo adapter: 25Mb/s 54g Wifi - 14Mb/s Note the big difference in favour of the 85meg powerline network vs wireless G.I would be interested to see a comparison with turbo G - like my US Robotics 125mbps wireless connection. You pay approx £27 in the UK for the old 14mbps units and £47 for the faster model. I'm sure wireless is fine for average Slimserver to SB activity -I use a mixture of the technologies at home and with a SB2 and Slimpey, and experience no problems piggy backing over both the wireless and powerline network. Once you start introducing a SB in every room, and start whacking video data down the network to/from your living room to record/watch tv etc. it becomes a different matter and you may find the extra bandwith/reliability useful of either a fully CAT5 wired or 85mbps Powerline network. -- jhall_uk ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
Robin: Yes, I spotted the delay on the Amazon site. No worries. FWIW to anyone interested I e-mailed Belkin support Wed. and received a reply back today. They've suggested turning on the router's UPnP mode, so wanting to give anything a try I have and I'll see what happens. Annoying I go away tomorrow so I can't give it a thorough test until I return. -- CavesOfTQLT ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
Re: [slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
CavesOfTQLT wrote: Dan Goodinson Wrote: Main concern at the moment is that the maximum transfer rate is around 14mbps so average transfer speed are probably more like 8-10mbps. In fact, that's slower than my wireless right now. But if my SB2 works like a dream using them then I'll be more than happy. £42 for those Acer babies sounds okay to me if they do work without issue; Robin please report back with your findings when you get them - thanks. Will do. Be aware that the delivery estimate is 6 Oct - 15 Oct 2005, so it could be about a month before I report back. R. -- http://robinbowes.com If a man speaks in a forest, and his wife's not there, is he still wrong? ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
RE: [slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
Indeed ;) I hate to say it (as you probably don't want to hear it ;) but my SB1 is working fine via wireless... I was only really thinking about the adaptors for regular network use i.e. not related to SB (hence off-topic). In fact, I just chatted to a guy at Solwise (see previous post, with links for 85mbps power-line devices) and he reckons that his bench test showed "true" transfer speeds (based on transferring a large data file) of: approx 7mbps for a 14mbps-rated device; approx 40mbps for a 54G-rated setup (with units only a few feet apart and therefore pretty much 100% signal strength); and, I think approx 25mbps for an 85mbps-rated device. I wonder if I heard him right, as 25mbps sounds a bit low. He mentioned some specs on the Solwise site, so I'm looking for this data before I commit to buying... Even 25mbps would be pretty good but still not much different to my current wifi setup. The only benefit would be that there would be no interference caused by cordless phones or microwaves. I need to do a bit more research into the noise on a standard electrical supply line though, as it seems that these things are still susceptible to a noisy line... ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
[slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
Dan Goodinson Wrote: > Main concern at the moment is that the maximum transfer rate is around > 14mbps so average transfer speed are probably more like 8-10mbps. In > fact, that's slower than my wireless right now. But if my SB2 works like a dream using them then I'll be more than happy. £42 for those Acer babies sounds okay to me if they do work without issue; Robin please report back with your findings when you get them - thanks. -- CavesOfTQLT ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
Re: [slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
Dan Goodinson wrote: Although it would seem that 85mbps adaptors are on their way, and should be available in the UK in a few weeks. Which manufacturers are producing these? Do you have any links? R. -- http://robinbowes.com If a man speaks in a forest, and his wife's not there, is he still wrong? ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
RE: [slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...)
I did a bit of googling, and found a range of products... Main concern at the moment is that the maximum transfer rate is around 14mbps so average transfer speed are probably more like 8-10mbps. In fact, that's slower than my wireless right now. Although it would seem that 85mbps adaptors are on their way, and should be available in the UK in a few weeks. Max transfer rates of 85mbps is probably going to translate to about 50mbps average. That's a bit more like it, and it faster than my wireless right now. I reckon I'll hold out for that. My wireless is supposed to be up to 125mbps; Yeah, right. Sigh. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robin Bowes Sent: 23 September 2005 12:50 To: discuss@lists.slimdevices.com Subject: Re: [slim] Re: OT: Power line network adaptors (was: Okay, maybeit's time to call it a day...) Philip Downer wrote: > On Fri, 2005-09-23 at 03:42 -0700, Fifer wrote: > >>I haven't used them but 'this' >>(http://www.devolo.co.uk/uk_EN/button/dlanfaq.html) might help answer >>some of your questions. > > > I can highly recommend the Devolo homeplug products they are very > good, and they have now released setup tools for Linux and OS X which > work very well. I've just ordered an Acer Homeplug Ethernet Kit from Amazon - two adaptors for £42 delivered! If they don't work, they're going back, but you can't complain at the price! R. -- http://robinbowes.com If a man speaks in a forest, and his wife's not there, is he still wrong? ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss ___ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
